My outside perspective is that there have been a relatively small
number of developers who've been involved in API decisions thus far,
so having an expanded window to incorporate feedback and changes from
others might be a good thing (from a community development
standpoint).

On Mon, Apr 27, 2020 at 3:48 PM Eric Erhardt
<eric.erha...@microsoft.com.invalid> wrote:
>
> Eventually I think we should get to a place where we can consider the C# API 
> "stable". At that time, I don't think breaking API changes would be 
> acceptable. But I don't think we are there yet.
>
> Of course new public APIs are never considered breaking changes, so any 
> functionality that can be implemented with new APIs can be freely made.
>
> Truly breaking changes (ex. removing APIs, renaming APIs, changing 
> parameters/return types, etc) can still be done, but some caution should be 
> used. Breaking changes are hard to consume in .NET. Here is my thought 
> process around breaking changes:
>
> 1. Is it truly required that a break MUST be done? Or can the desired 
> functionality be achieved with a new API?
> 2. Can the existing API still exist, but be marked Obsolete?
>     - This at least gives consumers a period of time where their code still 
> works, but produces a warning. And they can choose to switch to the new API.
> 3. If it isn't feasible to make the change without breaking an API, we should 
> look at the impact of it.
>     - For example, is it frequently used? Does the new change give enough 
> value to justify the break?
>
> Note, these are just my opinions. I'd like to hear others' thoughts as well.
>
> Eric Erhardt
>
> -----Original Message-----
> From: Adam Szmigin <adam.szmi...@xsco.net>
> Sent: Monday, April 27, 2020 7:10 AM
> To: dev@arrow.apache.org
> Subject: [EXTERNAL] C# - Appetite for breaking changes to public API?
>
> Dear team,
>
> I am keen to work on a number of the tickets relating to the C# 
> implementation for Apache Arrow.
>
> Quite a few of the open tickets relate to making breaking changes to the 
> public API (e.g. ARROW-7757, ARROW-8581, likely ARROW-6603 as well). What is 
> the general appetite for making breaking changes to the C# code in its 
> present state?
>
> The README.md hints at the C# implementation being alpha-grade at present, so 
> I assume all ok, but I would like to check opinions from the devs before I 
> embark on any PRs.
>
> Many thanks,
>
> --
> Adam Szmigin
>

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